Question

A certain compound has the molecular formula `X_4O_6`. If 10 f `X_4O_6` has 5.72 gm X. The atomic mass of X is:
A. 32 amu
B. 37 amu
C. 42 amu
D. 98 amu

Answer 1

Correct Answer - A
Let the atomic weight of `X` of `x`
mol of `X_4O_6=` mol of `X`
`implies("weight of "X_4O_6)/("atomic weight of "X_4O_6)=("Wt. of X")/("At. Wt. of 4X")`
`implies(10)/(4x+6+16)=(5.72)/(4x)`
`x=32`